Digital signal processing of randomly jittered under-sampled sequence

A method of analyzing an analog signal, comprising:

• providing the analog signal to an anti-aliasing filter;
• performing frequency filtering at the anti-aliasing filter and providing the analog signal to an analog-to-digital converter (ADC);
• providing, at a randomly jittered sampling module coupled to the ADC, a trigger input to the ADC, the trigger input causing the ADC to acquire a sample of the analog signal provided by the anti-aliasing filter;
• and
• changing, at the randomly jittered sampling module, a timing of the trigger input to cause the ADC to acquire an aperiodic sequence of samples of the analog signal, the aperiodic sequence of samples having an amount of aperiodicity that is randomly generated;
• and
• performing, at a controller coupled to the ADC, digital signal processing on the aperiodic sequence of samples to extract information from the analog signal, and providing the information to an external system.

A non-transitory computer-readable medium having computer-readable instructions stored thereon for analyzing an analog signal, the computer-readable instructions, when executed by a controller, cause the controller to perform a process that:

• receives an analog signal at an anti-aliasing filter;
• performs frequency filtering of the analog signal at the anti-aliasing filter and provides the analog signal to an analog-to-digital converter (ADC);
• provides a trigger input to the ADC, the trigger input causing the ADC to acquire a sample of the analog signal provided by the anti-aliasing filter;
• and
• changes a timing of the trigger input to cause the ADC to acquire an aperiodic sequence of samples of the analog signal, the aperiodic sequence of samples having an amount of aperiodicity that is randomly generated;
• and
• performs digital signal processing on the aperiodic sequence of samples to extract information from the analog signal, and provides the information to an external system.